First of all, i have read some similar threads about this, and all advise diffrent solution besides the hardware mod, I have tried for 2 days all methods in Miui forums and none have worked for me except the hardware method.
My Device: Xiaomi Redmi Note 3 Pro / SD version.
State:
-would only show "Mi" logo when powered on.
-Would enter only Fastboot.
- No EDL mode
- No recovery
-bootloader locked
-In this state, you can't flash absolutely nothing with any software. (from fastboot).
Requirements:
- windows 7/ windows 10 x64 edition.
- ONLY LATEST version of miflash, from 2016 onward, so it has the required drivers and methods to work with the phone. (I have tried with older versions and it did not work, i thought there was no hope for my phone).
- one hard bricked Redmi Note 3 Pro
- any fersion of Stable FASTBOOT OFFICIAL rom. (.tgz extension) - I personally used kenzo_global_images_V7.2.3.0.LHOMIDA_20160129.0000 .14_5.1_global_c85ba6c524.tgz
- medium disassembly skills,
- a lot of patience,
- minimum set of tools (one small cross screwdriver, 1-2 strong finger nails, good eyesight).
- one microusb cable
HOW TO:
1. uninstall all drivers and software related to the Xiaomi phone. (I ended up reinstalling windows 7 just to be sure all was gone - that is how desperate I became). To be sure this is done correctly, with the phone turned off, connect it to the computer.
Go into device manager, search in com ports, or wherever any drivers are installed for the phone, and uninstall all of them, ticking remove driver files also.
after doing this, hit refresh, and see if any drivers get installed again.
Repeat until there are no drivers installed, and the device will be without a driver.
2. Disconnect the phone and RESTART WINDOWS
3. Disable driver signature verification/enforcement:
a. in windows 7, this is easy: restart windows, hit f8 until a menu pops up where you can choose disable driver signature verification/enforcement.
b. in windows 10, it is a little bit longer, but:
http://ift.tt/1DEib2F - Be careful, when choosing the option in the last menu, use F... keys, not number keys.
4. while in windows, in the bottom right corner, there should be a message saying "test mode"
5. install ONLY the LATEST VERSION of Miflash! you may get some messages about driver installation (2 times), allow installation!
6. RESTART WINDOWS
7. Prepare the phone!: I followed the video here, even I did not understand the language:
http://ift.tt/1NW6iay - First, I used my nail to open the phone up, just like in the video. It is great that the screen is not glued to the body, there are only some clips holding it in place!
- after opening the cover please be careful - there is a cable connecting the case to the mainboard - the fingerprint sensor.
- after this, unscrew the 7 or 8 screws as in the video.
- unlock the cables as in the video - please be sure not to disconnect all the cables.
- now, first get the antenna plastic cover outside of the way.
- after disconnecting the camera module, I would personally advise you to get the camera out of the way first, as there is a piece of foil glued between the mainboard and the underneath of the camera module (on the display)
- with great care, rise the Mainboard from the display.
- to have better access to the testpoint pins, I turned the Mainboard over the battery.
- now, connect the microusb cable to the phone.
8. connect the phone to the computer.
9. go into device manager and check if there are any devices installed, there should be under ports.... a device called Qualcomm HS-USB Diagnostics 900E.
10. Now comes the tricky part, switching the phone to EDL mode (emercency download)
look on the back of the motherboard of the phone to connect the 2 testpoint pins as in the video. You can use anything to do this. a metal wire, a small scissors, an untied paperclip... You will have to do this while device manager is opened, as you must check it when the driver changes to "qualcomm hs-usb qdloader 9008".
Please be careful when trying to connect the 2 pins not to touch any metal housing, ans this will restart the device each time.
Now, try and try and try until the driver changes to "qualcomm hs-usb qdloader 9008".
11. unzip the rom using 7 zip to a destination of your choosing. I advise as short destination as possible and no spaces used in the folder naming. I unpacked it in C:\rom\
12. Open Miflash
13. As per other many many instructions:
a. click browse - select the folder where you unpacked the rom (for me, c:\rom\)
b. click the arrow next to brows button and select advanced.
c. in the first field, navigate to the folder where the rom was unpacked and select flashall.bat
d. in the third field select prog_emmc_firehose_8976_ddr.mbn from the "images"folder in the folder whre he rom was extracted
e. field 7: rawprogram0.xml and field8: patch0.xml
f. Hit the Refresh button, the device should appear as a com port in the white field of Miflash.
g. just to be sure, tick also "flash all" in the bottom of miflash.
14. Hit the Flash button on Miflash and this should be the last step before powering up your revived Xiaomi Redmi Note 3.
This is what I learned in the past 2-3 days.
Different errors I got during the learning process and what i did to avoid them:
- different problems with drivers not installing correctly or showing different device names - just use the method i pointed out in the beginning to uninstall any driver previously installed on the computer, with the refresh in device manager and than uninstalling all.
- "end of package" error at second 2 while flashing in Miflash - you are using an older or an unsupported version of miflash, just use the latest one.
- not being able to flash anything while in fastboot - if you have a locked bootloader, on redmi note 3 snapdragon version, you simply won't be able to flash anything. end of story. this is the whole purpose of having a locked bootloader.
- trying to go into EDL mode using fastboot comand "fastboot oem eld" - this will not work for a really bricked device as was mine. the only solution is to go through the tespoint pin connection.
